Casement window



A ril 25, 1939. H. H. GOLDBERG CASEMENT WINDOW Filed Dem l7, 193v m4,WWW

Patented Apr. 25, 1939 UNITED STATES PATENT OFFICE 2 Claims.

This invention relates to the construction of casings for windows of thetype known as casement windows.

It is now quite common practice to employ steel for the construction ofwindow casings or frames and a large number of patents have been grantedshowing window casings and frames of different kinds.

The present invention relates more particularly to the construction ofthe window casing and its principal object is to produce a casing thatcan be formed from strips of sheet steel bent into the required crosssectional shape, as distinguished from casings that must be rolled orextruded.

A further object is to produce a casing of such construction that agroove will be provided for the reception of a Weatherstrip.

A still further object is to produce a completed window in which thewindow sash is hinged along one side and movably attached to the casingby means of a link that has a slidable friction connection with thecasing so that the window can be opened to any desired extent and willbe held in such open position by the friction means.

The above and other objects that may become apparent as this descriptionproceeds are obtained by means of a construction and an arrangement ofparts that will now be described in detail, reference for this purposebeing had to the accompanying drawing in which the invention has beenillustrated and in which:

Figure 1 is a perspective view of the improved casing, the window sashbeing shown dotted and in open position;

Figure 2 is a front elevational view of one corner of the casing;

Figure 3 is a section taken on line 3-3 Fig. l, the window sash beingindicated by dotted lines and shown in closed position;

Figure 4 is a section similar to that shown in Fig. 3, but taken on line4--4 Fig. 1;

Figure 5 is a section, similar to that shown in Fig. 3, and shows thewindow sash in partly open position;

Figure 6 is a detail view, partly in section, showing the friction slideconstruction employed for holding the window sash in adjusted openposition;

Figure '7 is an edge view of the spring friction member shown in Fig. 6;and

Figure 8 is a section through the window casing, showing the same tosubstantially full scale.

The window casing which forms the subject of this invention is shown inperspective in Fig. 1

and the sides iii and end members ll of which it is constructed are madefrom strips of sheet steel which are formed by suitable dies into theshape shown in Fig. 8. Strips of sheet steel are first cut to the rightwidth and then bent, by a series of forming die operations, into theshape shown in Fig. 8.

The several steps in this operation and the several intermediate shapesassumed by the strip have not been shown because this invention does notrelate to the method but to the finished article. Referring now moreparticularly to Fig. 8, it will be seen that the casing has a straightflange l2 that is adapted to rest against the wall E3 of a windowopening. Flange l2 terminates in a wall l4 that extends at right anglesand terminates in a flange I 5 that is much wider than flange l2.Flanges i2 and I5 and wall M may be considered as being the flanges andweb of a Z-bar having flanges of unequal width. Flange I5 is providedwith a groove for the reception of a strip 56 of Weatherstripping whichmay be of felt or rubber, or of any other suitable material. The threewalls of the Weatherstrip groove have been designated by numberals H, isand 19. The edge of wall [9 is joined to the edge of flange at 2| andterminates in a straight wall 22, which in turn terminates in wall 23and the latter in flange 24. Side 22 and wall 23 form an angle for thereception of a screen frame which has been shown dotted in Fig. 8 anddesignated by S.

In constructing a window casing, two sides In and two ends H are cut theproper length from a straight section formed as shown in Fig. 8, theends are mitered and welded together to form a casing. The groove forthe Weatherstrip I6 is continuous as shown in Fig. 2.

A window sash, shown dotted in Fig. 1 and designated by numeral 25, isconnected to the upper side of the casing by two or more hinges 26. Withthe present casing the window sash can be formed from standard anglebars, connected at spaced intervals by T-bars 21. It will be apparentthat the window sash when in closed position will contact theWeatherstrip l6 and form a seal that will exclude dust and air. Asuitable catch or latch, not shown, may be provided to hold the windowin closed position.

For the purpose of holding the window sash in adjusted open position thefollowing means has been provided. Attached to the wall 14 of one, orboth, of the ends H is a rectangular hollow tube having one sideprovided with a slot 28. The hollow tube is preferably spot weldedresistance.

to the end of the casing. Mounted for frictional sliding movement in thetube is a flat strip 29 of spring steel. The thickness of strip 29 ispreferably somewhat less than the distance between the inside surfacesof wall 30 and flanges 3| so that if the strip were straight it wouldslide freely. In order to provide friction, strip 29 is bent (see Fig.'7) before it is inserted, and the pressure exerted by it against wall30 and flanges 31 produces suflicient friction to hold it in anyadjusted position. The lower end of strip 29 is provided with a pin 32that extends through the slot 28. A link 33 has one end pivoted to thepin 32 and the other end pivoted to the corresponding end member of thewindow frame. The length of the link 33 and the position of the pivot onthe window frame must be such that the window can be closed and moved tofully open position.

The amount of frictional resistance offered by spring strip 29 isdetermined by its rigidity and the amount of its flexure and must besuflicient to hold the window in open position and should not exceedthis to any appreciable extent because the window must be opened andclosed against this The toggle action due to the arrangement of thewindow frame and the link 33 is such that it is most effective formoving the slide 29 just as the window opens and closes.

The window sash is not removable except by disconnecting the hinges andthe novelty resides in the shape of the casing and the friction meansfor holding the window open. Particular attention is called to theangular relationship between sides 22, 23 and 24 by means of which arabbet is formed for the reception of a screen frame.

Having described the invention what is claimed as new is:

1. A window frame constructed from sheet metal, comprising a Z-barhaving flanges of unequal width connected by a web, the wider flangehaving the material along its free edge formed into a groove for thereception of a Weatherstrip, and a second bar integrally connected withthe outer edge of the flange having the groove, the second bar havingtwo angularly related sides, one paralleling the bottom and the otherthe side walls of the Weatherstrip groove, one of said sides beingperpendicular to and the other parallel with the flanges of the Z-bar,the last mentioned side of the second bar terminating in a narrow wallextending outwardly at an angle of substantially degrees, the outer endof the wall terminating in a flange substantially parallel with theflanges of the Z-bar, whereby a rabbet is formed for the reception of ascreen frame.

2. A window frame structure comprising elements connected together attheir ends to form the frame outline, each of said elements being ofsheet metal and formed from two Z-bars whose flanges are of unequalwidth, the wide flange of one bar having a groove extendinglongitudinally thereof, parallel with the web, the other Z-bar havingthe wider flange bent at right angles and connected with that part ofthe first Z-bar that forms the inner wall of the groove, the bottom ofthe groove resting on the adjacent surface of the wide flange of thesecond Z-bar, the webs of the Z-bars being substantially coplanar andthe narrow flanges substantially parallel and spaced apart.

HARRY H. GOLDBERG.

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